Cylinder-lock.



F. I. KIMBALL. CYLINDER LOCK. APPLICATION FILED FEB. 14, 1913.

Patented June 16, 1914.

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ATTORNEYS.

'COLUMBM ELANOGRAPH c0.. WASHINGTON. D. C.

UNITED STATES PATENT OFFICE.

FRANK I. KIMBALL, OF WEST HAVEN, CONNECTICUT, ASSIGNOR TO SAEGENT 8c COMPANY, OF NEW HAVEN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

CYLINDER-LOCK.

Specification of Letters Patent.

Patented June 16, 1914.

Haven, county of New Haven, and State of. Connecticut, have invented certain new and useful Improvements in Cylinder-Locks, of

which the following is a full, clear, and exact description.

This invention relates to cylinder locks and more particularly to a type of so-called mortise cylinder, which is adjustable in length in order to adapt the lock to doors of different thicknesses.

The primary object of the invention is to provide a simple, efficient cylinder lock of the extensible type which can be readily and inexpensively manufactured.

To this end, and others which will be obvious as the description proceeds, the invention consists in the novel features and combinations of parts to be hereinafter described and claimed.

In the accompanying drawing, Figure 1 is a front elevation of a lock embodying my invention, Fig. 2 is a side elevation of the same, showing the telescoping parts adjusted to present a lock of minimum length, Fig.

3 is a rear elevation of the lock, Fig. 4 is a top plan view of Fig. 2, Fig. 5 is a bottom plan view, showing the lock extended to a greater length, Fig. 6 shows the telescoping parts detached from each other, Flg. 7 1s a detail top View of the cylinder extension, Fig. 8 1s a detail front vlew of the cylinder extension, and Fig. 9 1s a section on llne 99 of Fig. 8.

Referring to the drawing, my improved lock comprises two telescoping parts: a main part or cylinder 10 and a subsidiary part or cylinder extension 11. The part 10, which I refer to generally as the cylinder, com! prises a face plate or escutcheon 12, a casing or cylinder proper 13, a pin tumbler exten" sion 14, a barrel or key plug 15, and a key rod 16 extending rearwardly from the key plug and secured thereto by means of a washer 17. Of course, the well known pin tumblers are used for locking the key plug to the cylinder but the arrangement and function of these pin tumblers are so well understood, that I have not considered it necessary to describe them.

The cylinder extension 11 comprises a disk shaped member 18 having exterior screw threads 19. Extending forwardly from the disk 18 are side walls 20 and a bottom wall 21 curved at their inner surfaces to present a bore 22 to receive the casing 13. The side walls 20 are spaced apart at the top so as to accommodate the pin tumbler extension 14. In this manner the cylinder extension 11 is adapted to telescope the casing 13 and pin tumbler extension 14 of the cylinder 10. The lower part of the pin tumbler extension 14 fits snugly between the flat opposing surfaces 23 ,of the upper portions of the walls 20. These flat surfaces 23 therefore serve to create a slideway for the pin tumbler extension, communicating with the bore 22. The bore 22 is of such size as to fit snugly over the curved outer surface of the casing 13. Moreover, the disk-like part 18 of the cylinder extension is provided at its front face with a shallow groove 24 in which the rear end of the pin tumbler extension 14 is adapted to fit snugly when the extension 11 is slid forward as far as possible on the cylinder 10.

The extension 11 carries at its rear face a bolt operating dog 25. This dog is secured to a collar 26 rotatably mounted in an open ing 27 passing through the disk 18 in line with the bore 22. The opening 27 is provided with a shoulder 29 which is abutted by the dog 25 on one side and by the collar 26 on the other side, as shown in Fig. 9. The dog 25 is provided with an opening fitting over a projecting portion or spline 30 extending rearwardly from the collar 26, and the dog is secured to the collar by means of screws 31. A square hole 32 extends through the collar 26 and the projecting portion 30 of said collar and is adapted to fit snugly over the rod 16 when the parts 10 and 11 are assembled. Hence it will be understood, that rotary movement of the key plug 15 will be transmitted to the dog 25. The rod 16 is usually of such length as to project rearwardly out of the dog 25 to a considerable extent but when the parts 10 and 11 have been properly adjusted relatively to each other the projecting end of the key rod may be cut off substantially flush with the rear surface of the dog.

The cylinder extension 11 may be secured in place on the main part of the look by means such as screws 34 passing through the forwardly projecting walls 20 of the cylinder extension into contact with the main part of the lock. By preference, one screw 34 will be used in connection with each of the walls 20 and each screw will be adapt-ed to contact at its inner end with the tumbler extension 14; By preference, the tumbler extension will be provided on opposite sides wit-h a longitudinal series of seat 35 adapted to receive the inner ends of the screws 34, so that it will be impossible for the cylinder ex tension to jar loose from the main part of the look. I have shown three seats 35 011 each side of the tumbler extension, but of course, the number may be varied as desired.

In Fig. 4 I have shown the lock adjusted to its minimum length. In this position of the parts the screws 34 enter those seats or sockets 35 which are closest to the escutcheon. I11 case a longer cylinder is desired, the screws 34 will be loosened and the extension will be moved to the right until the screws come opposite the next pair of seats or sockets 35, whereupon the screws will be tightened again. This adjustment is shown in Fig. 5. In case a still longer cylinder is desired, the extension will be moved into a position wherein the screws are adapted to engage the third pair of seats or sockets, as will be understood. The telescoping parts of the lock may be very readily moved to and fro by hand, and after the desired adjustment is secured, the screws 34 or their equivalents, will maintain the adjustment indefinitely.

Of course, in changing from the adjustment of Fig. 4 to that of Fig. 5 the connec tion of the key plug with the dog 35 must remain undisturbed. This condition will be realized if a coupling rod 16 of sufficient length is used, but I do not confine myself to the use of a coupling rod of the type shown, as the particular form of coupling between the key plug and dog is unessential so far as my invention is concerned.

Of course, I have not attempted to describe the various modifications of the construction which may be adopted within the scope of my invention as defined in the claims.

What I claim is:

1. In a cylinder lock, the combination of a main part comprising a cylinder casing and a pin tumbler extension, and a cylinder extenslon having side walls slidable along opposite faces of said pin tumbler extension; substantially as described.

2. In a cylinder lock, the combination of a main part comprising a cylinder casing and a pin tumbler extension, and a cylinder extension having a bore to receive said cylinder casing, and a slidcway for said pin tumbler extension communicating with said bore; substantially as described,

3. In a cylinder lock, the combination of a main part comprising a cylinder casing and a pin tumbler extension, and a cylinder extension comprising a disk-like member havin upright side walls conforming to the sides of the cylinder using and the pin tumbler extension; substantially as described.

4. In a cylinder lock, the combination of a main aart comprising a cylinder casing and a pin tumbler extension, and a cylinder extension comprising a threaded disklike member, and walls projecting forwardly from said member and presenting a bore to receive the cylinder casing, and a slidcway to receive the pin tumbler extension; substantially as described.

5. In a cylinder lock, the combination of a main part comprising a cylinder casing and a pin tumbler extension, and a cylinder extension comprising a threaded disk-like member, and walls projecting forwardly from said member and presenting a bore to receive the cylinder casing, and a slidcway to receive the pin tumbler extension, the front face of said disk-like member being notched to receive the rear edge of the pin tumbler extension; substantially as described.

6. In a cylinder lock, the combination of a main part, comprising a cylinder casing and a pin tumbler extension thereon, and a cylinder extension comprising a threaded disklike member, and walls projecting forwardly from said member and presenting a bore to snugly fit the cylinder casing, said walls also presenting a slide-way above the bore snugly fitting the side faces of the pin tumbler extension, said slide-way being open at the top and said pin tumbler extension projecting upwardly out of said slide-way; substantially as described.

7. In a cylinder lock, the combination of a main part comprising a cylinder casing and a pin tumbler extension, a cylinder extension having forwardly projecting upright walls creating a slidcway snugly fitting said pin tumbler extension on opposite sides, and a screw passing laterally through one of said walls and cooperating with a seat or socket of the pin tumbler extension; substantially as described.

8. In a cylinder lock, the combination of a main part comprising a cylinder casing and a pin tumbler extension, said pin tumbler extension having a longitudinal series of seats, a cylinder extension, and a screw carried by said cylinder extension and adapted to engage any one of said seats; substantially as described.

9. In a cylinder lock, the combination of a main part comprising a cylinder casing and a pin tumbler extension, with a cylinder extension comprising a disk having on its front face a seat for the rear edge of said pin tumbler extension; substantially as described.

10. In a cylinder lock, the combination of a main part comprising a cylinder casing and a pin tumbler extension, with a cylinder extension comprising a disk having on its front face a seat for the rear edge of said pin tumbler extension, and means projecting forwardly from the disk and presenting a slideWay for said casing and said pin tumbler extension; substantially as described.

11. In a cylinder lock, the combination of a main part comprising a cylinder casing and a pin tumbler extension, said pin tumbler extension being provided at one side With a longitudinal series of seats, W1th a cylinder extension comprising opposing Walls creating a slideWay for said pin tumbler extension, and a screw adapted to pass through one of said Walls into any one of said seats; substantially as described.

In Witness whereof, I have hereunto set my hand on the 12th day of February 1913.

FRANK I. KIMBALL.

Witnesses JOHN H. SHAW, BERTHA RAY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). (3." 

